//
//  AppDelegate.swift
//  weather
//
//  Created by smile on 2020/10/20.
//

import UIKit

@main
class AppDelegate: UIResponder, UIApplicationDelegate {



    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        
        //导航栏
        
        //颜色
        UIBarButtonItem.appearance().tintColor = .black
        
        //去掉返回按钮文本
        //这种方法能看到文字从不透明变为透明
//        UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedString.Key.foregroundColor : UIColor.clear], for: .normal)
        
        //这种方法看不到文字
        UIBarButtonItem.appearance().setTitleTextAttributes([NSAttributedString.Key.font : UIFont.systemFont(ofSize: 0)], for: .normal)
        
        return true
    }

    // MARK: UISceneSession Lifecycle

    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
        // Called when a new scene session is being created.
        // Use this method to select a configuration to create the new scene with.
        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
    }

    func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
        // Called when the user discards a scene session.
        // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
        // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
    }


}

